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2025-12-12 - 23:06
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Data to construct the above plot have been generated using the RT test utility cyclictest.
Unexpectedly long latencies may be caused by SMIs
Total number of samples: 100 million
Resolution of latency scale: normal
Duration: 5 hours, 33 minutes, lowest P state: performance
Characteristics of the 20 highest latencies:
System rack6slot0.osadl.org (updated Fri Dec 12, 2025 01:01:01)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
4214992959,265cyclictest4898-21qemu-system-x8623:45:2039
4214992959,265cyclictest4898-21qemu-system-x8623:45:2039
42149926727,228cyclictest0-21swapper/923:25:2139
42149926727,228cyclictest0-21swapper/923:25:2039
42149924629,194cyclictest15985-21CPU39
42149924629,194cyclictest15985-21CPU39
42149924610,224cyclictest36795-21nfsd21:20:2339
42149924610,224cyclictest36795-21nfsd21:20:2239
42149924430,201cyclictest22694-21TaskSchedulerSi22:30:2339
42149924430,201cyclictest22694-21TaskSchedulerSi22:30:2339
42149924430,201cyclictest22694-21TaskSchedulerSi22:30:2339
42149923712,209cyclictest33049-21inotify_reader19:35:1939
42149923712,209cyclictest33049-21inotify_reader19:35:1939
42149923711,213cyclictest18431-21inotify_reader20:35:2339
42149923711,213cyclictest18431-21inotify_reader20:35:2339
42149923331,196cyclictest36791-21nfsd00:35:2339
42149923331,196cyclictest36791-21nfsd00:35:2239
42149923331,196cyclictest36791-21nfsd00:35:2239
4214992229,199cyclictest39033-21inotify_reader22:35:2039
4214992229,199cyclictest39033-21inotify_reader22:35:2039
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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